— concertinist , n.
/kon'seuhr tee"neuh/ , n. , v. , concertinaed /-neuhd/ , concertinaing /-neuh ing/ , adj.
n.
1. a musical instrument resembling an accordion but having buttonlike keys, hexagonal bellows and ends, and a more limited range.
2. See concertina wire .
v.i.
3. to fold, crush together, or collapse in the manner of a concertina: The car concertinaed when it hit the truck.
v.t.
4. to cause to fold or collapse in the manner of a concertina.
adj.
5. of, pertaining to, or resembling a concertina: concertina pleats.
[ appar. coined by the original instrument's inventor, English instrument-maker Charles Wheatstone (1802-75), who patented it in 1829; cf. CONCERTINO, seraphina a similar instrument ]